(La,Sr)(Al,Ta)O3

(La, Sr) (Al, Ta) O3 is a composite perovskite structured oxide material with excellent dielectric properties and thermal stability. It is a relatively mature twin free perovskite crystal that is well matched with high-temperature superconductors and various oxide materials. It is expected to replace lanthanum aluminate (LaAlO3) and strontium titanate (SrTiO3) for giant magnetoelectric and superconducting devices.

Applications

Suitable for depositing thin films at low temperatures to improve lattice mismatch and reduce stress.

Features

From melting point to low temperature, there are no twins or phase transitions. It has the same structure as High-temperature superconductivity YBCO.
Moderate lattice mismatch of YBCO<001>. (2.5-3.5%).
The coefficient of thermal expansion is very low.

Crystal structure	Quartet
Crystal growth method	Czochralski technology
Lattice constant	a=3.756Å c=12.63 Å
Melting point（℃）	1650
Density	5.92（g/cm3）
Hardness	6-6.5（mohs）
dielectric coefficient	ε=16.8
Size	10x3，10x5，10x10，15x15，，20x15，20x20，
Size	Ф15,Ф20，Ф1″，Ф2″,Ф2.6″
Thickness	0.5mm，1.0mm
Polishing	Single-sided or double-sided
Crystal orientation	＜001＞
Crystal plane orientation accuracy	±0.5°
Edge orientation accuracy	2°（Special requirements can reach within 1°）
Bevel wafer	According to specific requirements, wafers with edge-oriented crystal planes inclined at a specific angle (inclination angle 1°-45°) can be processed
Ra:	≤5Å（5µm×5µm）

Package	Class 100 clean bag, Class 1000 super clean room

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(La,Sr)(Al,Ta)O3

Applications

Features

Properties